Vanguard World Fund - Vanguard Mega Cap Growth ETF
MX ˙ BMV ˙ US9219108167
SecurityMX:MGK / Vanguard World Fund - Vanguard Mega Cap Growth ETF
InstitutionUBS Group AG
Latest Disclosed Ownership1,037,729 shares
Latest Disclosed Value $ 381,303,143
UBS Group AG ownership in MGK / Vanguard World Fund - Vanguard Mega Cap Growth ETF

On May 5, 2026 - UBS Group AG filed a 13F-HR form disclosing ownership of 1,037,729 shares of Vanguard World Fund - Vanguard Mega Cap Growth ETF (MX:MGK) valued at $381,303,143 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 29, 2026 disclosing 1,100,021 shares of Vanguard World Fund - Vanguard Mega Cap Growth ETF. This represents a change in shares of -5.66% during the quarter.

UBS Group AG has a history of taking positions in derivatives of the underlying security (MGK) in the form of stock options.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

Upgrade to unlock premium data and export to Excel .

Institutional Put/Call Ratios
(Premium Subscription Required)

In addition to reporting standard equity and debt issues, institutions with more than 100MM assets under management must also disclose their put and call option holdings. Since put options generally indicate negative sentiment, and call options indicate positive sentiment, we can get a sense of the overall institutional sentiment by plotting the ratio of puts to calls. The chart to the right plots the historical put/call ratio for this instrument.

Using Put/Call Ratio as an indicator of investor sentiment overcomes one of the key deficiencies of using total institutional ownership, which is that a significant amount of assets under management are invested passively to track indices. Passively-managed funds do not typically buy options, so the put/call ratio indicator more closely tracks the sentiment of actively-managed funds.

MX:MGK / Vanguard World Fund - Vanguard Mega Cap Growth ETF Historical Put/Call Ratio
Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date
Effective
Date
Form Security Class ID Avg Price
Paid (Est)
Reported
Shares
ΔShares ΔShares
(%)
Reported
Value
(x1000)
ΔValue
(%)
Alloc
(%)
ΔAlloc ΔAlloc (%) Cost Basis
(x1000)
Unrealized
Gain/Loss
(x1000)
2026-05-05 2026-03-31 13F VANGUARD WORLD FD MEGA GRWTH IND 921910816 1,037,729 -62,292 -5.66 381,303 -16.02 0.0107
2026-01-29 2025-12-31 13F VANGUARD WORLD FD MEGA GRWTH IND 921910816 1,100,021 9,098 0.83 454,056 3.43 0.0132
2025-11-13 2025-09-30 13F VANGUARD WORLD FD MEGA GRWTH IND 921910816 1,090,923 122,275 12.62 439,009 23.77 0.0688
2025-08-14 2025-06-30 13F VANGUARD WORLD FD MEGA GRWTH IND 921910816 968,648 78,545 8.82 354,690 29.01 0.0614
2025-05-13 2025-03-31 13F VANGUARD WORLD FD MEGA GRWTH IND 921910816 890,103 72,857 8.91 274,935 -2.04 0.0505
2025-02-14 2024-12-31 13F VANGUARD WORLD FD MEGA GRWTH IND 921910816 817,246 -14,778 -1.78 280,650 4.77 0.0519
2024-11-14 2024-09-30 13F VANGUARD WORLD FD MEGA GRWTH IND 921910816 832,024 -9,977 -1.18 267,870 1.25 0.0584
2024-08-14 2024-06-30 13F VANGUARD WORLD FD MEGA GRWTH IND 921910816 842,001 13,930 1.68 264,565 11.47 0.0654
2024-05-13 2024-03-31 13F VANGUARD WORLD FD MEGA GRWTH IND 921910816 828,071 16,448 2.03 237,333 12.68 0.0591
2024-02-09 2023-12-31 13F VANGUARD WORLD FD MEGA GRWTH IND 921910816 811,623 -7,008 -0.86 210,624 13.39 0.0630
2023-11-09 2023-09-30 13F VANGUARD WORLD FD MEGA GRWTH IND 921910816 818,631 -26,922 -3.18 185,747 -6.65 0.0640
2023-08-11 2023-06-30 13F VANGUARD WORLD FD MEGA GRWTH IND 921910816 845,553 75,584 9.82 198,976 26.36 0.0672
2023-05-12 2023-03-31 13F VANGUARD WORLD FD MEGA GRWTH IND 921910816 769,969 24,590 3.30 157,466 22.77 0.0575
2023-02-08 2022-12-31 13F VANGUARD WORLD FD MEGA GRWTH IND 921910816 745,379 -101,222 -11.96 128,257 -13.08 0.0479
2022-11-10 2022-09-30 13F VANGUARD WORLD FD MEGA GRWTH IND 921910816 846,601 38,569 4.77 147,554 0.51 0.0647
2022-08-10 2022-06-30 13F VANGUARD WORLD FD MEGA GRWTH IND 921910816 808,032 36,251 4.70 146,811 -19.19 0.0603
2022-05-16 2022-03-31 13F VANGUARD WORLD FD MEGA GRWTH IND 921910816 771,781 111,797 16.94 181,677 5.57 0.0606
2022-02-14 2021-12-31 13F VANGUARD WORLD FD MEGA GRWTH IND 921910816 659,984 29,319 4.65 172,097 16.22 0.0493
2021-11-15 2021-09-30 13F VANGUARD WORLD FD MEGA GRWTH IND 921910816 630,665 -11,373 -1.77 148,080 -0.32 0.0466
2021-08-13 2021-06-30 13F VANGUARD WORLD FD MEGA GRWTH IND 921910816 642,038 -53,018 -7.63 148,555 3.22 0.0479
2021-05-12 2021-03-31 13F VANGUARD WORLD FD MEGA GRWTH IND 921910816 695,056 -25,257 -3.51 143,925 -1.93 0.0478
2021-02-11 2020-12-31 13F VANGUARD WORLD FD MEGA GRWTH IND 921910816 720,313 -65,005 -8.28 146,764 0.80 0.0496
2020-11-12 2020-09-30 13F VANGUARD WORLD FD MEGA GRWTH IND 921910816 785,318 -96,023 -10.90 145,598 1.03 0.0549
2020-07-31 2020-06-30 13F VANGUARD WORLD FD MEGA GRWTH IND 921910816 881,341 33,294 3.93 144,108 33.72 0.0609
2020-05-01 2020-03-31 13F VANGUARD WORLD FD MEGA GRWTH IND 921910816 848,047 39,647 4.90 107,770 -8.48 0.0508
2020-02-14 2019-12-31 13F VANGUARD WORLD FD MEGA GRWTH IND 921910816 808,400 -9,897 -1.21 117,752 8.47 0.0410
2019-11-14 2019-09-30 13F VANGUARD WORLD FD MEGA GRWTH IND 921910816 818,297 -139 -0.02 108,555 2.44 0.0418
2019-08-14 2019-06-30 13F VANGUARD WORLD FD MEGA GRWTH IND 921910816 818,436 19,923 2.50 105,971 6.72 0.0408
2019-05-14 2019-03-31 13F VANGUARD WORLD FD MEGA GRWTH IND 921910816 798,513 -161,791 -16.85 99,295 -3.37 0.0410
2019-02-14 2018-12-31 13F VANGUARD WORLD FD MEGA GRWTH IND 921910816 960,304 89,134 10.23 102,762 -7.97 0.0466
2018-11-14 2018-09-30 13F VANGUARD WORLD FD MEGA GRWTH IND 921910816 871,170 -99,395 -10.24 111,658 -3.30 0.0443
2018-08-14 2018-06-30 13F VANGUARD WORLD FD MEGA GRWTH IND 921910816 970,565 103,528 11.94 115,468 18.65 0.0500
2018-05-15 2018-03-31 13F VANGUARD WORLD FD MEGA GRWTH IND 921910816 867,037 -33,412 -3.71 97,316 -2.92 0.0420
2018-02-14 2017-12-31 13F VANGUARD WORLD FD MEGA GRWTH IND 921910816 900,449 -1,652 -0.18 100,247 6.12 0.0412
2017-11-14 2017-09-30 13F VANGUARD WORLD FD MEGA GRWTH IND 921910816 902,101 631 0.07 94,468 4.73 0.0437
2017-11-14 2017-06-30 13F/A-1 VANGUARD WORLD FD MEGA GRWTH IND 921910816 901,470 -33,497 -3.58 90,201 0.80 0.0467
2017-08-14 2017-06-30 13F VANGUARD WORLD FD MEGA GRWTH IND 921910816 901,470 -33,497 90,201
2017-11-14 2017-03-31 13F/A-1 VANGUARD WORLD FD MEGA GRWTH IND 921910816 934,967 162,450 21.03 89,486 32.98 0.0488
2017-05-12 2017-03-31 13F VANGUARD WORLD FD MEGA GRWTH IND 921910816 934,967 162,450 89,486
2017-02-14 2016-12-31 13F VANGUARD WORLD FD MEGA GRWTH IND 921910816 772,517 69,616 9.90 67,294 9.44 0.0372
2016-11-14 2016-09-30 13F VANGUARD WORLD FD MEGA GRWTH IND 921910816 702,901 1,475 0.21 61,490 5.04 0.0367
2016-08-12 2016-06-30 13F VANGUARD WORLD FD MEGA GRWTH IND 921910816 701,426 -17,341 -2.41 58,541 -2.03 0.0368
2016-05-12 2016-03-31 13F VANGUARD WORLD FD MEGA GRWTH IND 921910816 718,767 -8,292 -1.14 59,751 -1.03 0.0400
2016-02-16 2015-12-31 13F VANGUARD WORLD FD MEGA GRWTH IND 921910816 727,059 183,562 33.77 60,375 42.86 0.0392
2015-11-13 2015-09-30 13F VANGUARD WORLD FD MEGA GRWTH IND 921910816 543,497 6,352 1.18 42,262 -5.16 0.0299
2015-08-14 2015-06-30 13F VANGUARD WORLD FD MEGA GRWTH IND 921910816 537,145 -1,348 -0.25 44,562 -0.70 0.0296
2015-05-14 2015-03-31 13F VANGUARD WORLD FD MEGA GRWTH IND 921910816 538,493 -37,249 -6.47 44,878 -4.09 0.0310
2015-02-17 2014-12-31 13F VANGUARD WORLD FD MEGA GRWTH IND 921910816 575,742 575,742 46,791 0.0327
Disclosed Put Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share Price Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2026-05-05 2026-03-31 13F VANGUARD WORLD FD MEGA GRWTH IND Put 4,500 1,653 n/a n/a n/a
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.